feat(library): local lossless index, filters, and conserve dedicated page (#871)

* feat(library): local lossless index, filters, and conserve dedicated page

Add SQLite-backed lossless album browse and advanced-search filtering,
wire All Albums and artist/album lossless drill-down mode, and hide the
standalone /lossless-albums nav entry from sidebar visibility settings
(conserved route, default off).

* docs(release): note lossless local index in CHANGELOG and credits (PR #871)

src/locales/en/search.ts

@@ -23,8 +23,9 @@ export const search = {
   advancedYearFrom: 'from',
   advancedYearTo: 'to',
   advancedBpm: 'BPM',
-  advancedBpmLocalNote: 'Measured analysis BPM takes priority over file tags when the local index is enabled',
   advancedBpmClear: 'Clear BPM filter',
+  advancedLossless: 'Format',
+  advancedLosslessOnly: 'Lossless only',
   bpmSourceTag: 'BPM from file tag',
   bpmSourceAnalysis: 'BPM from audio analysis',
   advancedMoodGroup: 'Mood',